Finger mechanism for looms.



PATENTBD MAR..31`, 1903.,vk Z. L. GHADBOURII'E.A FINGER MECHANISM .FORLOOMS.

APPLIOATION FILED '.SEPT. 28. 1901.

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NO MODEL.

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FINGER 'MECHANISM' FOR LQOMS.

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UNITED STATES PATENT OFFICE.

ZEB'LON LINcOLN OHADBOURNE, or Nnw BRIGHTON, NEW YORK.

FINGER M ECHANISNI FOR LOOIVIS.

SPECIFICATIONforming part of Letters :Patent No. 724,260, dated. March31, 1903.

Application lerl September 28, 19.01. Serial No. 76,871. (No model.)

To all whom it may concern.:

Be it known that I, ZEBULON LINCOLN CHADBOURNE, a citizen of the UnitedStates, residing at New Brighton, in the county of Richmond and State ofNew York, have invented new and useful Improvements in Finger Mechanismfor Looms, of which the following is a specification. Y Y

My invention relates to a finger mechanism for engaging the weft-threadson a loom for open-meshed fabrics such as is covered by my applicationSerial No. 59,118 and raising these weft-threads up into position to becaught by the pins on the pin-roller to form crosses with the saidwarp-threads. Y

The novel construction employed is fully described in this specicationand claimed, and illustrated in the accompanying drawings, forming apart thereof, in Which- Figure 1 is a side elevation of the frontportion of a loom with parts broken away and with my device securedthereto'. Fig.f'2 is a plan view of the same. Fig. 3 is afragmentarydetail of one of the rock-shafts. y

Like numerals of reference designate 'like parts in the dierent views ofthe drawings.

The numeral 1 designates the sideframe of my loom, and 2 the maindriving-shaft. A double series of horizontal pins 3 are mounted in rails4, extending. transversely the machine. Aset of shuttles 5 are mountedon the pins 3-and each carries one end of a weft-thread A, which pass upand over a piu-roller 6, mounted to be revolved and to be reciprocatedendwise. 'A tension-bar 7 is mounted parallel to the pin-roller 6 andinl combination therewith supports warp-threads B. The tension-bar 7 ismounted to be reciprocated longitudinally in unison with the pinroller,and the warp thereby moved bodily in its own plane a distance of twothreads of the warp at each movement. After each movement of the Warpthe shuttles 5 are passed therethrough and cross the weft and warpthreads. After each movement of the warp thepin-roller is turned toengage the weft-threads and form crosses.

All of the above description applies to my loom and is no part of mypresent invention. In using the loom constructed as above set forth Ifound that the crosses of the threads did not come within reach of thepin-roller,

and some'mechanism was necessary to beat the crosses back-that is, raisethem up into vposition to be engaged by the pin-roller.

`the crosses it would be necessary to wind up the whole lengthintervening between the pin-roller 6 and the shuttles after each shiftof the pin-roller and tension-bar. This is avoided bythe fingermechanism. This mechanism forms the subject-matter of the pres- .entapplication.

Rigidly secured to the frames 1 in front of the pin-rollers 6 areapertured arms 9, within which is journaled a rock-shaft 10, bearingacrank-arm 11. YMounted. in the rock-shaft 10 is a 'series of paralleliingers 12 for engaging the weft-threads when in their forward position,(shown by dotted lines marked A,) each of the lingers 12 consisting oftwo parallel Vmembers having their ends turned out at 12.

A connecting-rod 13 is pivoted at its upper end to the crank-pin lla andat its lower to the long slotted arm of a lever 14, fulcrumed on a studseated in the frame. The short arm of thelever 14is slotted and pivotedto the upper end of a pusher-rod 15,'mounted in a guide 16, formed onanarm 15, secured to the frame 1. This pusher-rod 15 is provided with aroller'l, journaled in its lower end and located to be engaged by twoarms 17L of a four-'armed cam 17, keyed on the main Ishaft 2.

Located just back of the pin-roller 6 is a mechanism similar to the onejust 4described and comprising a rock-shaft 18, bearing fingers 19,which rock-shaft is provided with a crankarm- 20, connected to the longarm of a lever 21 by means of a rod 22. The short arm of -the lever 21is pivoted to a pusher-rod 22,

This pusher-rod 22a has a roller 23 journaled therein, which is inposition to be engaged by two arms 17b of the four-armedcam 17. -Thearms 17a and 17b alternate, so that the pushers 22 and 15 are operatedalternately. Springs 24 are connected tothe frame' 1 and to the longarms of the levers to restore them IOO to their initial position aftereach displacement.

The operation of my device can now be sketched. When the shaft 2revolves, the arms 17 and 17b alternately operate the 1evers 14 and 21to operate the rock-shafts 10.

and 18 to raise the fingers l2 and 19. The cam is set so that thefingers 12 will be raised to engage the weft-threads to throw theportion intervening between the shuttles and `fin gers parallel to thewarp-threads as viewed from the front and throw'the remaining part ofthe weft intervening between the fingers and the pin-roller 6 into aposition transverse to the Warp. When the fingers 12 have reached theuppermost position, this latter intervening length is very short and ispicked up by the next partial revolution of the pinroller 6. The fingers19 are raised to engage the weft when the shuttles are in their rearposition. By this means the action of my loom is made more positive thanbefore.

I do not wish to be limited as to details of construction, as these maybe modified in many particulars without departing from the spirit of myinvention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The combination with a pinroller mounted to be revolved and to movelongitudinally, a tension-bar, said roller and said tensionbar beingconstructed to carry a series of warp-threads and one of the ends of aseries of weft-threads which are arranged on said pin-roller alternatelywith said warp-threads, shuttles carrying the other ends of saidweftthreads, means for passing said shuttles through the plane of saidwarp, means for moving said pin-rollerand said tension-barlongitudinally after eachmovement of said shuttles to throw saidweftthreads outof parallel with said Warp-threads, fingers mounted toengage said weft-threads, and means for operating said ingers to engagesaid wef tthreads to bring them parallel with said warpthreads aftereach longitudinal movement of said pin-roller and tension-bar,substantially as described.

2. The combination with meansfor holding the lay of the warp and one endof the lay of the weft, shuttles carrying the other end of the weft,means for intermittently moving said shuttles, means for moving the warptransversely, fingers each formed ofi' two parallel members and locatedto engage the weft, and means foroperating said fingers, substantiallyas described. l

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses. 4

Witnesses:

CHAs. E. HUNTER, ERNEST L. CRANDALL.

